JP2010087801A - Communications apparatus, method of controlling the same, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that communication is disabled when a communication parameter provided from a communication parameter providing apparatus is set under the condition that the use of the communication parameter is restricted in a communication parameter receiving apparatus or in some countries and regional areas. <P>SOLUTION: When the communication parameter is received from the communication parameter providing apparatus, the validity of the communication parameter is determined on the basis of the predetermined rule. If the communication parameter is determined not to be set in the communication parameter receiving apparatus, an error is reported. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication device, a communication device control method, and a program.

  In wireless communication represented by a wireless LAN compliant with the IEEE 802.11 standard series, there are many setting items that must be set before use.

  For example, as setting items, there are communication parameters necessary for wireless communication such as SSID (Service Set Identifier) as a network identifier, a frequency channel, an encryption method, an encryption key, an authentication method, and an authentication key. It is very complicated for the user to set all of these manually.

  Therefore, various manufacturers have devised automatic setting methods for easily setting communication parameters in wireless devices.

  Recently, the establishment of a standard for a communication parameter automatic setting method called Wi-Fi Protected Setup (WPS) has been completed by an organization called Wi-Fi Alliance and has already been installed in some products (see Non-Patent Document 1).

In WPS, communication parameters are provided from a communication parameter providing device (hereinafter referred to as a providing device) to a communication parameter receiving device (hereinafter referred to as a receiving device) by a predetermined procedure and message. The receiving device can perform wireless LAN communication by setting the provided communication parameters in its own device (see Non-Patent Document 1 for details). In WPS, a communication parameter provided from a providing apparatus to a receiving apparatus is referred to as “Credential”.
Wi-Fi CERTIFIED (TM) for Wi-Fi Protected Setup: Easing the User Experience for Home and Small Office Wi-Fi (R) Networks, http: // www. wi-fi. org / wp / wifi-protected-setup

  Thus, communication parameters can be easily provided from the providing apparatus to the receiving apparatus by using WPS. However, there is a possibility that a communication parameter that should not be used is provided from the providing device due to a difference in specifications between the providing device and the receiving device. In such a case, even if communication parameters are shared between the providing device and the receiving device by WPS, there is a possibility that communication cannot be performed using the communication parameters. Further, even if communication can be performed using the shared communication parameter, there is a possibility that an operation failure such as garbled characters may occur when displaying the communication parameter information on the display unit.

  In addition, there are parameters that cannot be used depending on the country / region of use of the communication device. For example, frequency channels that are allowed to be used according to national or regional laws such as Japan, the United States, and Europe are different. Accordingly, when communication parameters that are prohibited in some places are provided, if wireless communication is performed using the communication parameters, it is against the law.

  An object of the present invention is to prevent a communication parameter from being used even when a communication parameter that may cause a problem when used is provided.

  In order to achieve the above object, a communication device of the present invention includes a receiving unit that receives a communication parameter provided from another communication device through communication parameter automatic setting processing, and a communication parameter received by the receiving unit is a predetermined parameter. When the determination unit determines whether the number of characters is or includes a predetermined character, and the determination unit determines that the communication parameter is not the predetermined number of characters or includes the predetermined character, the communication Control means for controlling the parameters not to be used for communication.

  In addition, the communication device of the present invention has a receiving unit that receives a communication parameter provided from another communication device by a communication parameter automatic setting process, and the communication parameter received by the receiving unit is prohibited from being used in a specific place. A determination unit that determines whether the communication parameter is used, and a control that does not use the communication parameter when the determination unit determines that the communication parameter is prohibited from being used at the specific location. And a control means.

  Furthermore, the communication device of the present invention includes a receiving unit that receives a communication parameter including a frequency channel from another communication device, and a plurality of frequency channels included in the communication parameter received by the receiving unit are used for communication. Of the frequency channels, determination means for determining whether the frequency channel is restricted in use, and when the determination means determines that the frequency channel is restricted in use, the frequency channel is used. And a control means for controlling so as not to occur.

  According to the present invention, even when a communication parameter that may cause a problem when used is provided, it is possible to prevent the communication parameter from being used for communication.

<Embodiment 1>
Hereinafter, the communication apparatus according to the present embodiment will be described in detail with reference to the drawings. In the following, an example using a wireless LAN system compliant with the IEEE 802.11 series will be described, but the communication form is not necessarily limited to the wireless LAN compliant with IEEE 802.11. Although the case where WPS is used as the communication parameter automatic setting process will be described, it can be applied to other automatic setting methods.

  A hardware configuration in a case suitable for the present embodiment will be described. FIG. 1 is a block diagram showing an example of the configuration of each device described later in the present embodiment.

  Reference numeral 101 denotes the entire apparatus. A control unit 102 controls the entire apparatus by executing a control program stored in the storage unit 103. The control unit 102 also performs communication parameter setting control with other devices. A storage unit 103 stores a control program executed by the control unit 102 and various types of information such as communication parameters. Various operations described later are performed by the control unit 102 executing a control program stored in the storage unit 103.

  A wireless unit 104 performs wireless LAN communication conforming to the IEEE802.11 series. Reference numeral 105 denotes a display unit that performs various displays, and has a function capable of outputting visually recognizable information such as an LCD or LED, or outputting sound such as a speaker.

  Reference numeral 106 denotes a setting button for giving a trigger for starting the communication parameter automatic setting process. When the setting button 106 is operated, communication parameter automatic setting processing is started. When the control unit 102 detects an operation of the setting button 106 by the user, the control unit 102 performs processing described later.

  Reference numeral 107 denotes an antenna control unit, and reference numeral 108 denotes an antenna.

  FIG. 2 is a block diagram illustrating an example of a configuration of software function blocks executed by each device.

  Reference numeral 201 denotes the entire apparatus. Reference numeral 202 denotes a communication parameter automatic setting function block. In the present embodiment, communication parameters necessary for wireless LAN communication such as SSID as a network identifier, frequency channel, encryption method, encryption key, authentication method, and authentication key are automatically set. In the following description, the automatic setting of communication parameters is simplified and described as automatic setting.

  A packet receiving unit 203 receives packets related to various types of communication. Reception of the beacon (notification signal) is performed by the packet receiving unit 203. A packet transmission unit 204 transmits packets related to various types of communication. The beacon is transmitted by the packet transmission unit 204.

  A search signal transmission unit 205 controls transmission of a device search signal such as a probe request. The probe request can also be referred to as a network search signal for searching for a desired network. Transmission of the probe request is performed by the search signal transmission unit 205. Further, the search signal transmission unit 205 also transmits a probe response that is a response signal to the received probe request. When the user operates the setting button 106 and the automatic setting process is started, information (IE: information element) indicating that the beacon, the probe request, and the probe response are being automatically set (automatic setting operation is in progress). It is added and transmitted.

  A search signal receiving unit 206 controls reception of a device search signal such as a probe request from another device. The search signal reception unit 206 receives the probe request. The search signal receiving unit 206 also receives a probe response. Various information of the transmission source device is added to the device search signal and the response signal.

  A network control unit 207 controls network connection. The network control unit 207 performs processing for connecting to a wireless LAN.

  In the automatic setting function block 202, 208 is a communication parameter receiving unit that receives (accepts) communication parameters from the partner device, and 209 is a communication parameter providing unit that provides communication parameters to the partner device. An automatic setting control unit 210 controls various protocols in automatic setting. The automatic setting process described later is performed by the communication parameter receiving unit 208 and the communication parameter providing unit 209 based on the control of the automatic setting control unit 210. The automatic setting control unit 210 also determines whether or not the elapsed time from the start of the automatic setting process has exceeded the time limit for the setting process. If it is determined that the time limit has been exceeded, the automatic setting process is stopped under the control of the automatic setting control unit 210.

  A determination processing unit 211 determines the content of the communication parameter received from the providing device. The communication parameter determination processing unit 211 determines whether or not the communication parameter received by the communication parameter receiving unit 208 may be used (details will be described later).

  A communication parameter storage unit 212 stores communication parameters received from the providing device. The communication parameter storage unit 212 corresponds to the storage unit 103. The communication parameter storage unit 212 may store only the communication parameters determined to be usable by the communication parameter determination processing unit 211 among the communication parameters received by the communication parameter receiving unit 208. Alternatively, all communication parameters received by the communication parameter receiving unit 208 may be temporarily stored, and the communication parameters determined not to be used by the communication parameter determination processing unit 211 may be deleted. Further, a communication parameter determined not to be used by the communication parameter determination processing unit 211 may be stored as a use-prohibited communication parameter.

  All the functional blocks have a mutual relationship in terms of software or hardware. Further, the functional block is an example, and a plurality of functional blocks may constitute one functional block, or any functional block may be further divided into blocks that perform a plurality of functions.

  FIG. 3 is a diagram illustrating a communication device A32 (hereinafter referred to as device A), a communication device B33 (hereinafter referred to as device B), and a communication device C34 (hereinafter referred to as device C). All these apparatuses have the configuration shown in FIGS. 1 and 2 described above.

  In the present embodiment, automatic setting processing is performed between the device A and the device C by operating the setting button 106 in both the device A and the device C. Either device A or device C may be a communication parameter providing device or a receiving device, but here, device A operates as a providing device and device C operates as a receiving device. I do.

  FIG. 4 is a flowchart of the apparatus C that operates as a communication parameter receiving apparatus.

  When the setting button 106 is operated in the devices A and C, the device C performs automatic setting processing between the devices A (S401).

  The device C receives the communication parameter from the device A by the automatic setting process of S401. The device C determines whether or not the received communication parameter may be set as a communication parameter used for wireless communication (S402).

Here, the case where communication parameters that should not be set by the device C are provided includes the following.
(1) When communication parameters are provided that do not satisfy the conditions (number of characters, usable characters) specified in the IEEE802.11 series wireless LAN standard series (2) Specified in the IEEE802.11 series wireless LAN standard series If communication parameters that may cause malfunction or inability to communicate when set in the receiver are provided (3) Use is prohibited by the laws or regulations of the country or region where you intend to use First, (1) will be described.

  In the IEEE802.11i standard, a passphrase (a type of encryption key) required for encryption / authentication processing is 8 to 63 characters in half-width alphanumeric characters (ASCII codes ranging from 0x20 to 0x7E). It is prescribed to do.

  Apparatus A, which is a communication parameter providing apparatus, provides apparatus C with a passphrase that is automatically generated based on a predetermined algorithm. Here, when an error occurs during the automatic generation process, the device A may transmit a passphrase that does not satisfy the conditions defined in the IEEE 802.11i standard. For example, a passphrase that contains 7 or fewer or 65 or more passphrases or control characters other than half-width alphanumeric symbols (control codes such as CR and LF, ASCII codes 0x00 to 0x1F, 0x7F) This is the case.

  Although a passphrase is given here as an example, other communication parameters include those in which the number of characters and usable characters are defined in the wireless LAN standard of the IEEE802.11 series.

  Next, (2) will be described.

  The IEEE 802.11 standard stipulates that the SSID is a 32-character octet string, and any value can be set in the standard as long as this condition is satisfied.

  Apparatus A, which is a communication parameter providing apparatus, provides apparatus C with an SSID generated based on a predetermined algorithm or an SSID input by a user.

  When the device A automatically generates the SSID, an SSID including a NULL character (0x00 in ASCII code) may be generated and transmitted to the device C. Here, even if a NULL character is included in the SSID, there is no problem in the IEEE802.11 standard, but depending on the specifications of the device C, characters after the NULL character may not be recognized. In this case, although the SSID of 32 characters is provided, the SSID that can be recognized by the device C is less than 32 characters and does not satisfy the IEEE 802.11 standard. As a result, even though device A can perform wireless communication using the SSID, device C cannot wirelessly communicate with device A.

  In addition, when an SSID including a NULL character is generated and provided, the apparatus A may delete the NULL character and use an SSID automatically supplemented with another character instead. However, the device C does not necessarily have the same automatic filling function as the device A, and even if it has the automatic filling function, there is a possibility that characters different from the device A are filled. As a result, wireless communication between device A and device C becomes impossible.

  Further, when the device A automatically generates the SSID, an SSID including control characters (such as CR and LF) other than alphanumeric character symbols may be generated and provided to the device C. Here, even if a control character is included in the SSID, there is no problem in the IEEE 802.11 standard. Therefore, even if the device C can perform wireless communication using the SSID, depending on the specification of the device C, a display may be required. There is a possibility that characters may be garbled when displayed on the part 105.

  When the user inputs the SSID in the device A, depending on the specification of the device A, there may be a case where characters represented by a multibyte code such as hiragana or kanji can be input. If communication parameters including characters represented by multi-byte codes are provided, even if they can be used for wireless communication, they may be garbled when displayed on the display unit 105 depending on the specifications of the device C. There is sex. This is a problem that may occur when the character codes that can be converted between the device A and the device C are different due to differences in sales countries.

  In this way, due to the difference in specifications between the providing device and the receiving device, setting the provided communication parameters may cause wireless communication to be disabled or malfunction. In addition, there is an apparatus that, once such a problematic communication parameter is set, must be initialized to a factory default state in order to change the setting to a new communication parameter again.

  Note that although an SSID is given here as an example, similar cases exist for an encryption key or a user ID used for IEEE 802.1X authentication.

  Finally, (3) will be described.

  According to the IEEE802.11g standard, it is defined that frequency channels (communication channels) from 1ch to 13ch can be used. However, depending on the area where the communication device is used, not all channels 1 to 13 can be used. For example, although all channels from 1ch to 13ch can be used in Japan, use of 12ch and 13ch is prohibited in the United States, and only 1ch to 11ch can be used. Therefore, when using a communication device in the United States, even if 12ch is provided as a communication channel from the providing device, the communication channel must not be set to 12ch.

  Here, an example is given and demonstrated about the network structure in which the communication channel of the value which should not be used may be provided. FIG. 5 is a diagram in which a communication device D51 (hereinafter referred to as device D) and the Internet 52 (hereinafter referred to as the Internet) are added to the network of FIG.

  In the case of the network configuration as shown in FIG. 5, the device A that is a communication parameter providing device can transfer the communication parameter transmitted from the device D via the Internet to the device C. Here, when the communication device D is in Japan and the network A is in the United States, a communication channel having a value that can be used in Japan but cannot be used in the United States may be provided to the device C as a communication parameter. In this case, even if the provided communication channel is set in the device C, the communication channel is not set in the device A, and wireless communication with the device A cannot be performed. Even if the communication channel is set in the device A and wireless communication with the device A can be performed, the wireless communication is a violation of the law.

  Further, when the device A operating as the providing device is sold in Japan, when the device A is brought into the United States and used, the same problem may occur even in the network configuration as shown in FIG.

  It should be noted that there are cases where other communication parameters such as SSID, encryption key, authentication key, etc., have restricted usage locations, and such communication parameters may be provided by automatic setting processing. It is done.

  As described above, since the communication parameter in question may be provided from the device A by the device C, in step S403, the device C determines whether or not the provided communication parameter may be set. .

  Specifically, the device C uses whether or not the provided communication parameter satisfies the condition defined in the wireless LAN standard, that is, whether the number of characters defined in the wireless LAN standard is used. Determine if a character that should not be included is included. In addition, the device C determines whether or not a character that becomes a problem when the device C is set is included in the provided communication parameters. Note that the number of characters determined by the wireless LAN may be stored in the storage unit 103 in advance, and it may be determined whether or not it matches the number of characters of the provided communication parameter. In addition, characters that cannot be used in the wireless LAN standard and characters that may cause communication failure or malfunction depending on the specifications of the device C are stored in the storage unit 103 in advance, and the provided communication parameters are used. It may be determined whether or not the character is included. The number of characters or the characters may be stored in advance in the storage unit 103 at the time of shipment from the factory, or may be configured to be arbitrarily set by the user.

  In addition, the device C determines whether or not the value of the provided communication parameter is a value that is restricted in use at the location where the device C is used. For example, a value of a communication parameter that is prohibited from being used in the sales area at the time of factory shipment is set, and it is determined whether or not the value of the provided parameter matches the value of the set communication parameter. It may be. In addition, information on each region such as the United States, Europe, Japan, and communication parameter values that are prohibited in each region are stored in association with each other so that the user can use the communication device when using the communication device. It is good also as a structure which can be set. In this case, it may be determined whether or not the communication parameter value stored in association with the area information set by the user matches the provided communication parameter value. A communication parameter value that is permitted to be used may be set instead of a communication parameter value that is prohibited from being used, and it may be determined whether or not it matches the provided communication parameter.

  If it is determined by the above determination processing that the provided communication parameter is a communication parameter that should not be set (No in S403), error processing described later is performed (S406).

  By doing so, it is possible to prevent communication parameters outside the IEEE 802.11 series standard from being set. In addition, by setting communication parameters outside the IEEE802.11 series standard, wireless communication conforming to the standard is not possible, and the probability of inconveniences such as inability to guarantee interoperability with other communication devices is also reduced. can do.

  In addition, it is possible to prevent communication failure and malfunction due to setting of communication parameters that are problematic for the receiving apparatus.

  Furthermore, it is possible to prevent communication parameters whose use is restricted depending on the region / country from being set.

  When the device C determines that the received communication parameter may be set and used as a result of the determination processing in S402, the device C sets the communication parameter as a communication parameter used for wireless communication (S404). Then, the device C performs connection processing with the device A using the set communication parameters (S405).

  Next, error processing in S406 will be described.

  As the error processing, for example, a message for notifying that the received communication parameter cannot be used or that the communication parameter is an invalid communication parameter may be transmitted to the device A that is the providing device. In addition, a message requesting device A to provide again a communication parameter different from the provided communication parameter may be transmitted, or each of these messages may be transmitted as one message. By receiving provision of another communication parameter from the device A that has received these messages, the device C can perform wireless communication.

  In addition, an error display may be displayed to notify the user that the communication parameter received by the display unit 105 of the communication apparatus C cannot be used, or that a communication parameter that should not be used has been provided. At this time, a message prompting the user to set the communication parameter by other methods (manual input, other automatic setting methods, etc.) may be displayed. By doing so, it is possible to take measures such as setting communication parameters by another method based on the judgment of the user who confirmed the display content of the display unit 105.

  Further, communication parameters determined not to be used may be deleted, or may be stored in the storage unit 105 as communication parameters for which use is prohibited.

  In addition, when the device C can cope with communication parameter automatic setting processing by a method other than WPS, the other automatic setting processing may be automatically started.

  Only one of these various error processes may be performed, or a plurality of processes may be combined.

  In the automatic setting process, a plurality of communication parameters with different frequency channels and encryption keys may be provided at a time. For example, when communication parameter A (SSID1, frequency channel 1, encryption key 1,...) And communication parameter B (SSID1, frequency channel 2, encryption key 2,...) Are sent at once. . In such a case, the above-described determination process (S402) is performed for each of the plurality of communication parameters that have been provided, and the above-described error process is performed only when it is determined that all communication parameters should not be used. You may do it. If there is at least one communication parameter that is determined to be usable, it is preferable to automatically set the communication parameter so that error notification to the providing device, error display on the display unit 105, and the like are not performed. . In this way, unnecessary automatic setting processing can be prevented, and wireless communication can be performed without making the user aware of the provision of communication parameters that should not be used.

  As described above, according to the present embodiment, it is possible to prevent the setting of communication parameters that may cause problems when used by examining the contents of the communication parameters received by the communication parameter automatic setting process. It becomes possible.

  Moreover, such a communication parameter can be automatically set to prevent a problem that the operation of the communication apparatus becomes unstable, thereby contributing to an improvement in the safety of the communication apparatus. . In addition, it is possible to prevent communication parameters that cannot be used depending on the country or region from being automatically set.

  In the above description, when it is determined that the provided communication parameter may be used (Yes in S403), the communication parameter is automatically set (S404). However, the determination process is not necessarily performed. Subsequent to the setting process, the setting process may not be performed. That is, when it is determined that the provided communication parameter should not be used (No in S403), error processing is performed (S406). When it is determined that the communication parameter may be used (Yes in S403), You may make it complete | finish the process of FIG. Then, when the start of wireless communication is instructed by the user's operation, the wireless communication may be performed by setting the communication parameter determined to be usable.

  Also, as a criterion for determining whether or not the provided communication parameter may be used, it is determined whether the number of characters is a predetermined number, whether a predetermined character is included, or whether the use is restricted in a specific place However, only one of them may be determined.

  Also, the above description has been made with reference to an IEEE 802.11-compliant wireless LAN as an example. However, the present invention may be implemented in other wireless media such as wireless USB, MBOA, Bluetooth (registered trademark), UWB, and ZigBee. Moreover, you may implement in wired communication media, such as wired LAN.

  Here, MBOA is an abbreviation for Multi Band OFDM Alliance. UWB includes wireless USB, wireless 1394, WINET, and the like.

  In addition, the network identifier, the encryption method, the encryption key, the authentication method, and the authentication key are exemplified as communication parameters, but other information may be used, and other information may be included in the communication parameters. Needless to say.

  According to the present invention, a recording medium recording software program codes for realizing the above-described functions is supplied to a system or apparatus, and a computer (CPU, MPU) of the system or apparatus reads and executes the program codes stored in the recording medium. It may be. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, a DVD, or the like is used. it can.

  Further, by executing the program code read by the computer, not only the above-described functions are realized, but also the OS running on the computer based on an instruction of the program code partially or entirely of the actual processing. To realize the above-described function. OS is an abbreviation for Operating System.

  Further, the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Then, based on the instruction of the program code, the CPU provided in the function expansion board or function expansion unit may perform part or all of the actual processing to realize the above-described function.

Block diagram of the device Software function block diagram in the device Network configuration diagram Process flowchart of apparatus C in embodiment 1 Network configuration diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 201 Apparatus apparatus 202 Communication parameter automatic setting functional block 203 Packet receiving part 204 Packet transmission part 205 Search signal transmission part 206 Search signal reception part 207 Network control part 208 Communication parameter reception part 209 Communication parameter provision part 210 Automatic setting control part 211 Communication parameter Determination processing unit 212 Communication parameter storage unit

Claims (16)

A communication device,
Receiving means for receiving communication parameters provided from other communication devices by communication parameter automatic setting processing;
Determining means for determining whether the communication parameter received by the receiving means is a predetermined number of characters or includes a predetermined character;
Control means for controlling the communication parameter not to be used for communication when the determination means determines that the communication parameter is not the predetermined number of characters or includes the predetermined character;
A communication apparatus comprising: A communication device,
Receiving means for receiving communication parameters provided from other communication devices by communication parameter automatic setting processing;
Determining means for determining whether the communication parameter received by the receiving means is a communication parameter that is prohibited from being used in a specific place;
When the determination means determines that the communication parameter is prohibited from being used at the specific location, control means for controlling not to use the communication parameter;
A communication apparatus comprising:   The determination means determines whether the received communication parameter is the number of characters defined by the 802.11 series wireless LAN standard or includes characters other than the characters defined by the 802.11 series wireless LAN standard. The communication apparatus according to claim 1, wherein:   The communication apparatus according to claim 1, wherein the determination unit determines whether a control character is included.   The communication apparatus according to claim 1, wherein the determination unit determines whether hiragana or kanji is included.   The communication apparatus according to claim 2, wherein the determination unit determines whether the communication parameter is prohibited from being used by a law in the specific place.   The communication device according to claim 1, wherein the control unit notifies the other communication device of an error.   The communication device according to claim 1, wherein the control unit requests the other communication device to newly provide a communication parameter different from the received communication parameter. .   The communication apparatus according to claim 1, wherein the control unit notifies the user of an error.   The communication apparatus according to claim 1, wherein the control unit performs notification for prompting a user to set communication parameters by a method different from the automatic setting process.   The communication device according to claim 1, wherein the control unit automatically starts communication parameter setting processing of a method different from the automatic setting processing. A communication device,
Receiving means for receiving communication parameters including frequency channels from other communication devices;
Determining means for determining whether a frequency channel included in the communication parameter received by the receiving means is a frequency channel whose use is restricted among a plurality of frequency channels used for communication;
If the determination means determines that the frequency channel is restricted in use, control means for controlling not to use the frequency channel;
A communication apparatus comprising: A communication device control method comprising:
A receiving step of receiving communication parameters provided from other communication devices by communication parameter automatic setting processing;
A determination step of determining whether the communication parameter received in the reception step is a predetermined number of characters or includes a predetermined character;
In the determination step, when it is determined that the communication parameter is not the predetermined number of characters or includes the predetermined character, a control step for controlling the communication parameter not to be used for communication;
A method for controlling a communication apparatus, comprising: A communication device control method comprising:
A receiving step of receiving communication parameters provided from other communication devices by communication parameter automatic setting processing;
A determination step of determining whether the communication parameter received in the reception step is a communication parameter prohibited from being used in a specific place;
In the determination step, if it is determined that the communication parameter is prohibited from being used in the specific place, a control step of controlling not to use the communication parameter;
A method for controlling a communication apparatus, comprising: A communication device control method comprising:
Receiving a communication parameter including a frequency channel from another communication device;
A determination step of determining whether the frequency channel included in the communication parameter received in the reception step is a frequency channel whose use is restricted among a plurality of frequency channels used for communication;
In the determination step, when it is determined that the frequency channel is restricted in use, control means for controlling not to use the frequency channel;
A communication apparatus comprising:   The program for making a computer perform each process in the control method of any one of Claim 13 to 15.

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